Heat integration for hot solvent stripping loop in an acid gas removal process

An acid gas removal process comprising the steps of:

• providing a feed gas including acid gas to at least one absorber, the at least one absorber including an absorbent material that absorbs acid gas;
• removing acid gas from the feed gas by absorption to produce a first rich solvent stream including solvent and acid gas;
• separating at least one slip stream from the first rich solvent stream and heating the at least one slip stream by heat exchange to produce at least one heated slip stream;
• passing at least a portion of the first rich solvent stream to a bridge heat exchanger to produce a heated rich solvent stream;
• combining the at least one heated slip stream with the heated rich solvent stream to form a combined rich solvent stream;
• passing the combined rich solvent stream to a concentrator to produce a stripped solvent stream as a bottoms stream, and a stripped gas stream as an overhead stream;
• passing the stripped solvent stream to a regenerator to remove acid gas and produce an acid gas stream as an overhead stream, and a lean solvent stream as a bottoms stream;
• passing the stripped gas stream to a separator to produce a recycle gas stream as an overhead stream;
• and
• passing the recycle gas stream to one or more compressors to produce compressed recycle gas stream.

An acid gas removal process comprising the steps of:

• providing a feed gas including acid gas to at least one absorber, the at least one absorber including an absorbent material that absorbs acid gas;
• removing acid gas from the feed gas by absorption to produce a first rich solvent stream including solvent and acid gas;
• separating a first slip stream from the first rich solvent stream and heating the first slip stream in a stripper gas heat exchanger by heat exchange with the stripped gas stream to produce a heated first slip stream;
• passing at least a portion of the first rich solvent stream to a bridge heat exchanger to produce a heated rich solvent stream;
• and
• combining the first heated slip stream with the heated rich solvent stream to form a combined rich solvent stream.